Zelftest A PDF

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2. Choose the statement that correctly characterizes bound ribosomes. a. Bound ribosomes are enclosed in their own membrane. b. Bound and free ribosomes are structurally different. c. Bound ribosomes generally synthesize membrane proteins and secretory proteins. d.The most common location for bound ribosomes is the cyto-plasmic surface of the plasma membrane. e.All of the above. 3.Which of the following is not considered part of the endo-membrane system? a.nucleair envelop b. mitochondrion d. plasma membrane c. Golgi apparatus 4.Cells of the pancreas will incorporate radioactively labeled amino acids into proteins. This "tagging" of newly synthesized proteins enables a researcher to track the location of these proteins in a cell. In this case, we are tracking an enzyme that is eventually secreted by pancreatic cells. Which of the following is the most 1ike1y pathway for movement of this protein in the ceil? a.ER-Golgi-nucleus b.Golgi-ER-lysosome c. nucleus-ER-Golgi d.ER-Golgi-vesicles that fuse with plasma membrane e.ER-lysosomes*vesicles that fuse with plasma membrane 6.Which of the following is present in a prokaryotic cell? a. mitochondrion d. chloroplast b. ribosome e. ER c. nuclear envelope 7.Which type of ce11 would probably provide the best opportunity to study lysosomes? a. muscle cell d. leaf cell of a plant b. nerve ceil e. bacterial cell c. phagocytic white blood cell 9. Which of the following structure-function pairs is mismatched? a.nucleolus, ribosome production b.lysosome; intracellular digestion c.ribosome; protein synthesis d.Golgi; protein trafficking e.microtubule, muscle contraction...